Mechanical behavior of nanocrystalline TiNi alloy produced by severe plastic deformation

被引：40

作者：

Valiev, R. Z. ^{[1
]}

Gunderov, D. V. ^{[1
]}

Lukyanov, A. V. ^{[1
]}

Pushin, V. G. ^{[2
]}

机构：

[1] Ufa State Aviat Tech Univ, Inst Phys Adv Mat, Ufa 450000, Russia

[2] Russian Acad Sci, Inst Met Phys, Ural Div, Ekaterinburg 620219, Russia

来源：

JOURNAL OF MATERIALS SCIENCE | 2012年 / 47卷 / 22期

关键词：

TRANSFORMATIONS;

D O I：

10.1007/s10853-012-6579-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Nanocrystalline (NC) Ti494Ni50:6 alloy with a different mean grain size in a range of 20-100 nm has been successfully produced using severe plastic deformation by high pressure torsion and further annealing at various temperatures. The features of microstructure and martensitic transformation of the NC TiNi have been studied. During tensile tests the effects of the grain size on mechanical properties at room and elevated temperatures are studied and discussed. The NC TiNi exhibits an unusual increased strength but low ductility at room temperature. However, it demonstrates enhanced strength and ductility at higher temperatures.

引用

页码：7848 / 7853

页数：6

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